JP6711189B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

Patent Document 1 includes a planar light-emitting body made of an organic EL and a light-emitting element made of an LED, and a reflective film having a high reflectance is provided on the back side of the organic EL, or a back-side electrode of the organic EL is a material having a high reflectance. A vehicle lamp is disclosed in which the organic EL is used as a reflector of a light emitting element including an LED and the organic EL is formed on a parabolic surface to control the light distribution of the light emitting element including an LED. There is.

JP, 2014-192000, A

By the way, the paraboloid is a shape having a three-dimensional shape change, and when such a three-dimensional shape change is allowed, the shape of the organic EL is changed so as to be a reflector with good utilization efficiency of light from the light emitting element. It has the advantage of being easy to design.
On the other hand, if the shape of the organic EL is a complicated shape having a three-dimensional shape change, there is a problem that the manufacturing cost increases.

The present invention has been made in view of the above circumstances, and is a vehicle in which utilization efficiency of light from a point light source such as a light emitting element is high and a complicated shape of a surface light source such as an organic EL is suppressed. The purpose is to provide a lighting fixture.

The present invention is grasped by the following configurations in order to achieve the above object.
(1) The vehicular lamp according to the present invention has a semiconductor type point light source, a lens portion arranged in the vicinity of the point light source, has a reflection characteristic, and has a function as a reflector for light from the point light source. A semiconductor-type surface light source having, and a surface shape having a restriction surface provided with the surface light source for restricting the surface shape of the surface light source to the surface shape as the reflector for controlling the light distribution from the point light source in the vertical direction. A regulating portion, wherein the regulating surface is a cylindrical surface in which a free curve based on a parabola is continuous in the horizontal direction, and the lens portion is at least one of light emitted from the point light source. Light distribution control is performed to irradiate light from a certain part toward the surface light source.

(2) In the configuration of (1) above, the lens portion is disposed in the vicinity of one side of the point light source and radiated from the point light source to the one side outside of the surface light source. A first lens for performing light distribution control for irradiating the surface light source with light, and arranged near the other side of the point light source and radiated from the point light source to the outside of the other side of the surface light source. And a second lens for performing light distribution control for irradiating the surface light source with the generated light.

(3) In the configuration of (2) above, the lens portion includes a bridge portion that bridges the first lens and the second lens.

(4) In the configuration of (3) above, the bridging portion is provided so as to form an opening through which light emitted from the point light source toward the inside of the surface light source passes through.

(5) In the configuration of any one of (2) to (4), the first lens has a first incident surface that faces a second incident surface of the second lens, and The first entrance surface and the second entrance surface of the second lens are provided such that the distance between the first entrance surface and the second entrance surface becomes shorter toward the front side.

(6) In the configuration according to any one of (2) to (5), the first lens may irradiate the surface light source with light from the point light source that is incident into the first lens. An emission surface and a first reflection surface that reflects the light from the point light source that has entered the first lens toward the first emission surface, and the second lens is provided inside the second lens. A second emission surface that irradiates the incident light from the point light source toward the surface light source, and a second reflection surface that reflects the light from the point light source incident into the second lens toward the second emission surface. And a reflective surface.

(7) In the above configuration (6), the first lens has a first light diffusing element provided on the first exit surface, and the second lens is provided on the second exit surface. It has a second light diffusing element.

(8) In the configuration of any one of (1) to (7), the light from the surface light source is used for a tail lamp or a clearance lamp, and the light from the point light source is a stop lamp, a daytime running lamp, or a turn. Used in lamps or rear fog lamps.

ADVANTAGE OF THE INVENTION According to this invention, the utilization efficiency of the light from a point light source, such as a light emitting element, is high, and the vehicular lamp which suppresses that the shape of surface light sources like organic EL becomes complicated can be provided.

FIG. 1 is a plan view of a vehicle equipped with the vehicle lamp of the first embodiment according to the present invention. It is a perspective view which shows the principal part of the lamp unit of 1st Embodiment which concerns on this invention. FIG. 3 is a vertical cross-sectional view taken along the line AA of FIG. 2. It is a perspective view of a lens part of a 1st embodiment concerning the present invention. FIG. 3 is a vertical cross-sectional view taken along the line BB of FIG. 2 as seen from the front side where light is emitted as a vehicle lamp. It is a perspective view showing the 1st modification of the lens part of a 1st embodiment concerning the present invention. It is sectional drawing for demonstrating the vehicle lamp of 2nd Embodiment which concerns on this invention. It is a perspective view of a lens part of a 3rd embodiment concerning the present invention. It is a top view for explaining the state of light distribution control of the lens part of a 3rd embodiment concerning the present invention.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail with reference to the accompanying drawings. The same numbers are given to the same elements throughout the description of the embodiments.

The vehicle lamp of the embodiment according to the present invention is a vehicle lamp 102R provided in the rear of the vehicle 102 shown in FIG. 1 and a vehicle lamp 102F provided in the front (hereinafter, simply referred to as a vehicle lamp). , For example, a vehicle lamp with a tail lamp and a stop lamp, a vehicle lamp with a tail lamp and a turn lamp, a vehicle lamp with a tail lamp and a rear fog lamp, a vehicle lamp with a clearance lamp and a daytime running lamp, a clearance lamp and a turn It is a vehicular lamp including a lamp.

In the following description, unless otherwise specified, the direction of irradiating light as a vehicle lamp is “front, front, front side”, and the direction opposite to the direction of irradiating light is “rear, rear”. , "Rear side", the vertical direction of the vehicle is the vertical direction, and the direction orthogonal to the vertical direction is the horizontal direction.

Regarding the horizontal direction, the horizontal direction of the direction in which light is emitted from the vehicle lamp is the horizontal front (side), and the opposite horizontal direction is the horizontal rear (side).
Further, the description that the horizontal direction that is orthogonal to the direction of irradiating light as the vehicle lamp is the horizontal direction side, and the lateral direction is the lateral direction that is orthogonal to the front-rear direction and the vertical direction is used.

(First embodiment)
The vehicle lamp of the present embodiment includes a housing (not shown) that is open to the front side, which is the direction in which light is emitted, and an outer lens (not shown) that is attached to the housing so as to cover the opening. A lamp unit 10 (see FIGS. 2 and 3) and the like are arranged in a lamp chamber formed by a lens.

2 is a perspective view showing a main part of the lamp unit 10, and FIG. 3 is a vertical sectional view taken along the line AA of FIG.

As shown in FIG. 3, the lamp unit 10 includes a semiconductor-type point light source 20, a semiconductor-type surface light source 30, a surface shape regulation portion 40 having a regulation surface 41 on which the surface light source 30 is provided, a point light source 20, and The lens unit 50 is provided near the point light source 20, and the bracket 60 is attached to the surface shape regulation unit 40.

(Point light source)
The point light source 20 is a light source that emits light used for a stop lamp, a daytime running lamp, a turn lamp, a rear fog lamp, or the like that requires a high light amount, and as shown in FIG. The light emitting chip 22 is provided.

In the present embodiment, an LED light source, which is a semiconductor-type light source using a light emitting diode chip as the light emitting chip 22, is used as the point light source 20, but it is not limited to the LED light source, and the point light source 20 emits light. It may be a laser light source which is a semiconductor-type light source using a laser diode chip for the chip 22.
In addition, in this embodiment, the case where the number of the light emitting chips 22 is one is shown, but the number of the light emitting chips 22 is not particularly limited, and a plurality of the light emitting chips 22 may be provided.

(Area light source)
The surface light source 30 is a light source that emits light used for a tail lamp, a clearance lamp, or the like, which has no problem even if the amount of light is relatively low. In the present embodiment, an organic EL sheet which is a sheet-shaped organic EL is used. ..

When the surface light source 30 is used as a light source that emits the light used for the tail lamp, the surface light source 30 emitting red light may be used, but the surface light source 30 emitting white light is used to make the outer lens red. May be.
Further, when the surface light source 30 is used as a light source that emits light used for the clearance lamp, it is preferable to use the surface light source 30 that emits white light.

Specifically, as shown in the enlarged view in FIG. 3, the surface light source 30 is provided on the back surface side protective layer 31 provided on the regulation surface 41 of the surface shape regulation portion 40 and on the back surface side protection layer 31. Provided on the cathode 32, the electron injection layer 33 provided on the cathode 32, the electron transport layer 34 provided on the electron injection layer 33, the light emitting layer 35 provided on the electron transport layer 34, and the light emitting layer 35. The hole transport layer 36 includes a hole injection layer 37 provided on the hole transport layer 36, an anode 38 provided on the hole injection layer 37, and a surface-side protective layer 39 provided on the anode 38.

The cathode 32 has a reflection characteristic by using an alloy of Mg and Ag, and also has a function as a reflector for the light from the light emitting chip 22 (point light source 20). ..
A transparent electrode such as ITO or ATO is used for the anode 38 so that the light emitted from the light emitting layer 35 can be transmitted.

When a transparent electrode such as ITO or ATO is used for the cathode 32, a reflective film made of aluminum or the like may be provided on the back surface side of the back surface side protective layer 31, and the cathode 32 may be provided as in the present embodiment. Even when an alloy of Mg and Ag is used, a reflective film made of aluminum or the like may be provided on the back surface side of the back surface side protective layer 31.

Further, the light emitting layer 35 may be one using an organic material containing a fluorescent material, but it is made of an organometallic complex containing iridium because the efficiency of converting electricity into light is high and the generation of heat can be suppressed. It is preferable to use a phosphorescent material.

Further, although transparent glass or resin can be used for the back surface side protective layer 31 and the front surface side protective layer 39, in order to suppress deterioration of the light emitting layer 35 due to moisture, a transparent material excellent in moisture resistance is used. It is preferably used.

In the present embodiment, the surface light source 30 in the state of an organic EL sheet is used, and the surface light source 30 is provided on the restriction surface 41 of the surface shape restriction portion 40 by fixing it by a fixing means such as adhesive fixing. The surface light source 30 is provided on the regulation surface 41 such that each layer is directly formed on the regulation surface 41 by using the surface shape regulation portion 40 as a base member by vapor deposition, coating or the like. You may be allowed to.

(Surface shape control part)
As shown in FIG. 3, the surface shape restricting portion 40 serves as a mounting portion on which the surface light source 30 is provided, and also serves as a reflector for controlling the light distribution from the point light source 20 by the surface light source 30 in the vertical direction. It is also a part that plays a role of regulating the surface shape of the surface light source 30 so as to have a functional surface shape.

For this reason, when the flexible organic EL sheet that is the surface light source 30 is fixed onto the restriction surface 41 along the shape of the restriction surface 41, the shape of the restriction surface 41 on which the surface light source 30 is provided is The reflector is formed into a surface shape that allows light distribution control.
Even when the surface light source 30 is directly formed on the restriction surface 41, the surface shape of the surface light source 30 is the same as the surface shape of the restriction surface 41.

Specifically, as shown in FIG. 3, the regulation surface 41 is a free curve based on a parabola when viewed in cross section, and as shown in FIG. The curved surface is a pillar surface that is continuous laterally in the horizontal direction.

Therefore, the restriction surface 41 only has a two-dimensional change in surface shape, and the surface light source 30 is provided without causing excessive bending of the surface light source 30 formed of the organic EL sheet. Therefore, it is possible to prevent the surface light source 30 from having a complicated three-dimensional shape.

It should be noted that the organic EL has a three-dimensional complicated surface shape such as a parabola even if the total thickness of the plurality of organic layers provided between the cathode 32 and the anode 38 shown in FIG. Although it is difficult to form a film with a uniform thickness on the surface having the restriction, in the present embodiment, the restriction surface 41 is a change in the two-dimensional surface shape and has a relatively simple surface shape. Even when the organic EL is directly formed on the surface 41 by film formation, it is easy to form the film with a uniform thickness.

The surface light source 30 provided on the regulation surface 41 and having a regulated surface shape has the same surface shape as the regulation surface 41, and performs light distribution control for reflecting the light from the point light source 20. Acts as a reflector.

On the other hand, in the present embodiment, the case where the member forming the surface shape restricting portion 40 is used is shown, but the surface shape restricting portion 40 does not need to be manufactured as a dedicated member.
For example, a regulation surface 41 on which the surface light source 30 is provided is formed in the housing forming the lamp chamber so that the surface shape of the surface light source 30 is a surface shape capable of performing light distribution control as a reflector. The light source 30 may be provided.

(bracket)
The bracket 60 is a member to which the point light source 20 and the lens unit 50 are attached. As shown in FIG. 3, when the bracket 60 is attached to the surface shape regulation unit 40 with a screw 61 (see FIG. 2), the point light source 20 and The lens unit 50 is designed to be located at a predetermined position with respect to the surface light source 30 that functions as a reflector.

(Lens part)
FIG. 4 is a perspective view of the lens unit 50.
As shown in FIG. 4, the lens portion 50 has a pair of flange portions 51 provided on the front side and the rear side, and the flange portion 51 is screwed to the bracket 60 in the state shown in FIG. A screw hole 51a through which a screw (not shown) for fixing is provided is provided.

Then, as shown in FIG. 3, the lens unit 50 is fixed to the bracket 60 with a screw (not shown) so as to have a predetermined positional relationship with the point light source 20 fixed to the bracket 60.

FIG. 5 is a vertical cross-sectional view taken along the line BB of FIG. 2 as seen from the front side where the light as the vehicle lamp is emitted.
The bracket 60 is not shown in FIG.

As shown in FIGS. 4 and 5, the lens unit 50 is disposed in the vicinity of one side of the point light source 20 (on the left side of FIG. 5) and extends outward from the point light source 20 to the one side of the surface light source 30. Is disposed near the other side of the point light source 20 (right side in FIG. 5) and the first lens 52 that performs light distribution control to irradiate the surface light source 30 with the light emitted (see light ray LL1 in FIG. 5). A second lens 53 for performing light distribution control for irradiating the surface light source 30 with light emitted from the point light source 20 toward the outside on the other side of the surface light source 30 (see light ray LR1 in FIG. 5). There is.

Specifically, as shown in FIG. 5, light emitted from the point light source 20 toward one side and outside of the surface light source 30 (see light ray LL1 in FIG. 5) enters the first lens 52. The first incidence surface 52a, the first emission surface 52b that irradiates the surface light source 30 with the light from the point light source 20 that has entered the first lens 52 from the first incidence surface 52a, and the first incidence surface 52a through the first incidence surface 52a. The curved surface-shaped first reflecting surface 52c that reflects the light from the point light source 20 that has entered the first lens 52 toward the first emitting surface 52b.

The second lens 53 has a second incident surface 53a on which the light emitted from the point light source 20 toward the outer side on the other side of the surface light source 30 (see light ray LR1 in FIG. 5) is incident, and the second incident surface. The second light emitting surface 53b that irradiates the surface light source 30 with the light from the point light source 20 that has entered the second lens 53 from the surface 53a, and the point light source 20 that has entered the second lens 53 from the second incident surface 53a. And a curved second reflection surface 53c that reflects the light from the second reflection surface 53b toward the second emission surface 53b.

As shown in FIG. 4, the first incident surface 52a of the first lens 52 and the second incident surface 53a of the second lens 53 are provided so as to face each other.

Therefore, if the lens unit 50 is not provided, the light from the point light source 20 that is not emitted to the surface light source 30 (see the light rays LL1 and LR1 in FIG. 5) is emitted to the surface light source 30 by the lens unit 50. The use efficiency of the light from the point light source 20 is high.

Further, the lens portion 50 includes a bridge portion 54a that bridges between the front end surfaces of the first lens 52 and the second lens 53, and a bridge portion that bridges between the rear end surfaces of the first lens 52 and the second lens 53. 54b.

In this way, the bridge portion 54a and the bridge portion 54b are provided, and the first lens 52 and the second lens 53 are integrally connected to each other to form the lens portion 50, so that a lens including the separate first lens and second lens is provided. It is easier to handle than parts and the number of parts can be reduced.

However, the first lens 52 and the second lens 53 do not necessarily have to be integrated into the lens unit 50, and the lens unit 50 includes the first lens 52 and the second lens that is a separate body from the first lens 52. It may be configured using 53.

Then, as shown in FIGS. 4 and 5, the bridge portion 54a and the bridge portion 54b pass through the light emitted from the point light source 20 toward the inside of the surface light source 30 (see the light rays ILL1 and ILR1 in FIG. 5). It is provided so as to form an opening 55 (see FIG. 4) through which it passes.

Even if the material has a high light-transmitting property such as that used for a lens, absorption loss occurs when passing through the material, and reflection attenuation also occurs due to the difference in refractive index between air and the material, In this way, even if the light distribution control is not performed by the lens unit 50, the light from the point light source 20 that can be emitted to the surface light source 30 can be directly transmitted to the surface light source 30 to improve the light use efficiency. be able to.

Further, since the lens portion 50 can be made lighter by providing the opening 55, since the opening 55 is located directly below the light emitting chip 22, ventilation for taking in air to the light emitting chip 22 side can be achieved. It also serves as a mouth, and it is possible to enhance the cooling efficiency of the light emitting chip 22.
Further, when such an opening 55 is provided, the light on the center side of the light emitting chip 22 having a large amount of light and a large amount of heat generation is not emitted to the lens unit 50, so that the temperature of the lens unit 50 is prevented from becoming high. You can also
Since the lens part 50 is arranged in the vicinity of the point light source 20, the temperature may be high even if the opening 55 is provided. Therefore, the lens part 50 is made of a polycarbonate resin having high heat resistance. It is suitable.

However, it is not always necessary to provide the opening 55, and as in the first modification of the lens section 50 shown in FIG. 6, the bridging section 54 is provided in a portion which is located immediately below the light emitting chip 22. Good.
In the case of the first modified example of the lens unit 50 shown in FIG. 6, the shape is simpler than that of the lens unit 50 shown in FIG.

According to the vehicular lamp having the above-described configuration of the lamp unit 10, only by providing the surface light source 30 along the regulation surface 41 of the surface shape regulation portion 40, the surface shape of the surface light source 30 is reflected. Since the surface shape can be appropriately controlled as described above, the labor at the time of manufacturing can be reduced, and the manufacturing cost can be suppressed.

In particular, since the restricting surface 41 is a cylindrical surface in which a free curve based on a parabola is continuous in the horizontal direction, it has only a two-dimensional surface shape change.
Therefore, even when the organic EL sheet is used for the surface light source 30, the organic EL sheet is not excessively bent, damage to the organic EL sheet can be prevented, and reliability can be improved.

It should be noted that if the organic EL film is formed directly on the regulation surface 41 as long as it has a gradual change in surface shape having only such a two-dimensional change in surface shape, the film of each organic layer is formed. Since the thickness can be easily controlled and a uniform film thickness can be formed, a good organic EL can be formed.

Further, since a flexible sheet-shaped organic EL sheet is generally available on the market, the fact that the sheet-shaped organic EL can be used as described above means that such a standard flexible sheet-shaped organic EL sheet can be used. This means that EL can be used, and it is possible to suppress the component cost of the surface light source 30 by using a standard flexible sheet-like organic EL for the surface light source 30.

In addition, if the lens unit 50 does not provide the lens unit 50 among the light from the point light source 20, the surface light source 30 is irradiated with the light that is not emitted to the surface light source 30, so that the light from the point light source 20 is used. It can be highly efficient.

Further, as shown in FIG. 5, since the light emitted to the surface light source 30 by the lens unit 50 can be emitted toward the center, the light distribution control for creating a high luminous intensity zone near the center on the screen can be performed. It is possible.

Therefore, a light distribution pattern that is suitable for a light distribution pattern of a stop lamp, a daytime running lamp, a turn lamp, a rear fog lamp, etc., in which it is desired to provide a high light intensity zone with high light intensity on the center side of the screen is formed. Light control is possible.

(Second embodiment)
FIG. 7 is a sectional view for explaining the vehicular lamp of the second embodiment, and is a sectional view corresponding to FIG.
In the second embodiment, the basic configuration is the same as that of the first embodiment, and in the following, differences from the first embodiment will be mainly described, and description of the same points as the first embodiment will be omitted. There is.

As shown in FIG. 7, in the second embodiment, the first light diffusion element is provided on the first emission surface 52b of the first lens 52, and the second light diffusion element is provided on the second emission surface 53b of the second lens 53. The point that it is provided is different from the first embodiment, and other points are the same as the first embodiment.

Specifically, as shown in FIG. 7, the first light diffusing element and the second light diffusing element are wavy from the point light source 20 side of the first emitting surface 52b and the second emitting surface 53b toward the horizontal side. It is formed as a diffusion prism.

Therefore, when the surface light source 30 is irradiated with light from the first emission surface 52b and the second emission surface 53b, the light is diffused toward the center side as shown in FIG. Since the light is diffused to the lateral side, the light is emitted to the center side more than the state shown in FIG. 5, and the unevenness of the light intensity in the high light intensity band formed in the center on the screen is suppressed. By doing so, it is possible to improve the controllability of the light distribution in the high light intensity band formed in the center of the screen.

(Third Embodiment)
The lamp unit of the third embodiment will be described with reference to FIGS. 8 and 9.
FIG. 8 is a perspective view showing the lens unit 50 of the third embodiment, and FIG. 9 is a plan view for explaining the light distribution control state of the lens unit 50 of the third embodiment.

In addition, in FIG. 8, the illustration of the flange portion 51 for attaching to the bracket 60 is omitted.
Further, FIG. 9 shows a state where the surface light source 30 is viewed from the upper side in the vertical direction, and only the light emitting chip 22 of the point light source 20 and the surface light source 30 are illustrated.

Also in the third embodiment, the basic configuration is similar to that of the first embodiment, and the only difference is the configuration of the lens unit 50.
Therefore, hereinafter, the configuration of the lens unit 50 will be mainly described, and description of the same points as in the first embodiment may be omitted.

As shown in FIG. 8, in the lens unit 50 of the third embodiment, the first lens 52 and the second lens 53 are provided so that the separation distance becomes shorter toward the front side.
In the present embodiment, the distance between the first lens 52 and the second lens 53 itself is shortened toward the front side. However, it is necessary to bring the first lens surface 52a and the second lens surface 53a closer to each other. May be only.

When the distance between the first incident surface 52a and the second incident surface 53a is shortened toward the front side in this way, the utilization efficiency of the light from the point light source 20 can be further increased. Refer to FIG. 9 below. However, the reason will be explained.

FIG. 9 schematically shows a case where the light is emitted from the light emitting chip 22 toward the front side at an emission angle of θ1 and a case where the emission angle is emitted at θ2.
As shown in FIG. 9, even if the light is emitted at a large emission angle from the light emitting chip 22 to the front side at a distance D1 (see emission angle θ1), the surface light source 30 is irradiated with the light.

On the other hand, at the distance D2 from the light emitting chip 22 to the front side, the light having the emission angle of θ1 is emitted to the lateral outside of the surface light source 30.
At this distance D2, as shown in FIG. 9, only the light of θ2 having a small emission angle is irradiated to the surface light source 30.

That is, the light having a larger emission angle is irradiated to the lateral outside of the surface light source 30 as it goes to the front side. Therefore, in order to prevent such light from being generated, the incident surface ( By arranging the first incident surface 52a and the second incident surface 53a toward the center, the incident surface (the first incident surface 52a and the second incident surface 53a) becomes smaller toward the front side even if the emission angle is smaller. ), so that the surface light source 30 can be irradiated.

Therefore, it is possible to suppress the generation of light that does not enter the incident surface (the first incident surface 52a and the second incident surface 53a) even though the emission angle is not applied to the surface light source 30, and reliably direct the light to the area light source 30. Therefore, the light from the point light source 20 can be used more efficiently.

The present invention has been described above based on the specific embodiments, but the present invention is not limited to the above embodiments.
For example, in the above embodiment, the point light source 20 is provided above the surface light source 30 in the vertical direction, but the positional relationship between the surface light source 30 and the point light source 20 is upside down in the vertical direction, that is, 3, the top and bottom of FIG. 3 may be reversed.

Further, by adjusting the shapes of the emission surfaces (first emission surface 52b and second emission surface 53b) and the reflection surfaces (first reflection surface 52c and second reflection surface 53c) of the first lens 52 and the second lens 53. It is possible to collect the irradiation direction of the light emitted to the surface light source 30 from the first emission surface 52b and the second emission surface 53b to the center side of the surface light source 30, and to obtain a desired high light intensity band state. Accordingly, the shapes of the emission surfaces (first emission surface 52b and second emission surface 53b) and the reflection surfaces (first reflection surface 52c and second reflection surface 53c) of the first lens 52 and the second lens 53 may be changed. Needless to say.

As described above, the present invention is not limited to the specific embodiments, and modifications and improvements without departing from the technical idea are also included in the technical scope of the invention, It will be apparent to those skilled in the art from the description of the claims.

10 Lamp Unit 20 Point Light Source 21 Substrate 22 Light Emitting Chip 30 Surface Light Source 31 Back Side Protective Layer 32 Cathode 33 Electron Injection Layer 34 Electron Transport Layer 35 Light Emitting Layer 36 Hole Transport Layer 37 Hole Injection Layer 38 Anode 39 Surface Protective Layer 40 Surface Shape Restriction part 41 Restriction surface 50 Lens part 51 Flange part 51a Screw hole 52 First lens 52a First entrance surface 52b First exit surface 52c First reflection surface 53 Second lens 53a Second entrance surface 53b Second exit surface 53c Second Reflective surface 54 Bridge portion 54a First bridge portion 54b Second bridge portion 60 Bracket 61 Screw 102F Front vehicle lamp 102R Rear vehicle lamp 102 Vehicle

Claims (8)

Semiconductor type point light source,
A lens portion arranged in the vicinity of the point light source,
A semiconductor-type surface light source having a reflection characteristic and also having a function as a reflector for light from the point light source,
A surface shape restricting portion having a restriction surface on which the surface light source that restricts the surface shape of the surface light source to the surface shape as the reflector that controls light distribution from the point light source in the vertical direction is provided.
The restriction surface is a pillar surface in which a free curve based on a parabola is continuous in the horizontal direction,
The vehicular lamp is characterized in that the lens section performs light distribution control for irradiating at least a part of light emitted from the point light source toward the surface light source. The lens unit is
A first lens disposed near one side of the point light source and performing light distribution control for irradiating the surface light source with light emitted from the point light source toward one side outside of the surface light source. When,
A second lens disposed near the other side of the point light source and performing light distribution control for irradiating the surface light source with light emitted from the point light source to the outside of the other side of the surface light source. The vehicle lamp according to claim 1, further comprising: The vehicle lamp according to claim 2, wherein the lens portion includes a bridge portion that bridges the first lens and the second lens. The vehicular lamp according to claim 3, wherein the bridge portion is provided so as to form an opening through which light emitted from the point light source toward the inside of the surface light source passes through. .. The first lens has a first entrance surface that faces a second entrance surface of the second lens,
The first entrance surface of the first lens and the second entrance surface of the second lens are provided such that the distance between the first entrance surface and the second entrance surface becomes shorter toward the front side. The vehicle lamp according to any one of claims 2 to 4, which is characterized by being provided. The first lens is
A first emission surface that irradiates the surface light source with light from the point light source that has entered the first lens;
A first reflection surface that reflects the light from the point light source that has entered the first lens toward the first emission surface,
The second lens is
A second emission surface that irradiates the surface light source with the light from the point light source that has entered the second lens;
The second reflection surface that reflects the light from the point light source that has entered the second lens toward the second emission surface, and further comprises a second reflection surface. The vehicle lamp according to item 1. The first lens has a first light diffusing element provided on the first exit surface,
The vehicular lamp according to claim 6, wherein the second lens has a second light diffusing element provided on the second exit surface. Light from the surface light source is used for a tail lamp or a clearance lamp,
8. The vehicular lamp according to claim 1, wherein the light from the point light source is used for a stop lamp, a daytime running lamp, a turn lamp or a rear fog lamp.

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